Comments by "flagmichael" (@flagmichael) on "Toyota's New Engine Technical review Part 1 : Cooling,Lubrication,Direct Injection and EGR" video.

  1. It isn't just a Toyota thing, either. 0W-16 is a brand new viscosity covered by ILSAC GF-6B. Consider it an entirely different lubricant; "GF-6B - The attributes of GF-6B include the following: Not backwards compatible with older engines" https://360.lubrizol.com/Specifications/ILSAC/ILSAC%20GF-6/ILSAC%20GF-6A%20and%20GF-6B Never substitute 0W-16 into an engine designed for any other viscosity, and if at all possible avoid substituting any other oil in engines designed for 0W-16 GF-6B. GF-6B provides better protection against low speed pre-ignition, a serious concern for advanced engines like the A25A engines. The mistake of thinking protection is proportional to viscosity is one that has been made for decades. Viscosity is about bearing clearances; protection is about film strength, a very different thing. When somebody tells you the recommended oil is not right for the engine you know they don't know oil. Oil pressure exists only to maintain oil flow through the potential wear areas, using higher viscosity oil reduces that flow. https://www.api.org/-/media/Files/Certification/Engine-Oil-Diesel/Publications/Motor%20Oil%20Guide%201020.pdf
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  2.  @TheCarCareNut  Thanks for the recommendation! I have been doing oil changes on our 2014 Prius when the 5K mile reminder tells me it's time, although our service fits the 10K mile comditions in the maintenance schedule. When I change the oil it is darker than new but I can still see light through it. I'll stick with the 5K mile changes.
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